EP1072700A1 - Vorrichtung und Verfahren zum kontrollieren der Motorantriebe in Textilmaschinen - Google Patents

Vorrichtung und Verfahren zum kontrollieren der Motorantriebe in Textilmaschinen Download PDF

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Publication number
EP1072700A1
EP1072700A1 EP00202689A EP00202689A EP1072700A1 EP 1072700 A1 EP1072700 A1 EP 1072700A1 EP 00202689 A EP00202689 A EP 00202689A EP 00202689 A EP00202689 A EP 00202689A EP 1072700 A1 EP1072700 A1 EP 1072700A1
Authority
EP
European Patent Office
Prior art keywords
controlling
motor drives
revolutions
textile machines
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP00202689A
Other languages
English (en)
French (fr)
Inventor
Giovanni Battista Pasini
Gian Mario Baitelli
Cesare Marella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marzoli SpA
Original Assignee
Marzoli SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marzoli SpA filed Critical Marzoli SpA
Publication of EP1072700A1 publication Critical patent/EP1072700A1/de
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft
    • D01H5/36—Regulating or varying draft according to a pre-arranged pattern, e.g. to produce slubs
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/10—Tension devices
    • D01H13/108—Regulating tension by regulating speed of driving mechanisms of unwinding, paying-out, forwarding, winding or depositing devices, e.g. automatically in response to variations in tension

Definitions

  • This invention refer to a device and a process for controlling the motor drives of textile machines.
  • a textile machine such as for instance a fly frame or a continuous ring frame
  • motor drives for instance by using some "brushless” or asynchronous motors
  • these motor drives are controlled by their own systems ("inverters"), whose purpose is to ensure that every working organ of the textile machine follows their rules of motion, based on certain production parameters (such as for instance the count and the twists per inch of the yarn to be produced) set up on an application program loaded on a central computer, which takes care of synchronizing the individual motor drives.
  • the traditional control systems comprise "closed loop” systems including a number of sensors placed on the machine's working organs (for example, for the monitoring of the revolutions of the spools on a continuous fly frame), capable of transmitting the signal needed to correct the nominal revolutions of each motor drive to a processor; alternatively, the motor drives of textile machines employ some control systems of a "master/slave” type, where a reference signal is used to control the revolutions of all the textile machine's motor drives.
  • the purpose of this invention is therefore to overcome the mentioned drawbacks, and in particular to offer a device and a process for controlling the motor drives of textile machines, so as to ensure their safety and reliability, while not requiring the use of particularly complex or overly expensive technologies with respect to those of the known art, in relation to the available advantages.
  • a further purpose of this invention is to offer a device and a process for controlling the motor drives of continuous ring frames and fly frames, capable of reducing their manufacturing and operating costs with respect to those of similar machines of a traditional design.
  • the use of the process according to this invention automatically eliminates the loss of time due to the stoppage of the spools or of the drawing cylinders, because of failures or malfunctions during the textile spinning, winding or other phases, with respect to those of the known technologies.
  • C indicates a cylinder assembly of a spinning machine (continuous ring frame), in which a pair of primary actuators C1, controlled by their relative actuators, controls a motor drive on each side of the frame, while a pair of secondary and tertiary actuators C23, which derive their motion from a single "brushless" type motor, control a further motor drive of the textile machine.
  • the cylinder system C of a continuous ring frame is constituted by a series of fiber drawing devices, which happen to be present in a number equal to the number of the spindles set up side by side on one or the other fronts of the machine; in the case of Figure 1, the outlet drawing cylinders, indicated by the number 10, are pressed from the top by the pressure rollers (not shown in the Figure), and the row of intermediate drawing cylinders 20 are controlled by some kynematic devices including among others the gears 63, 64, while the gears 65, 66, 67 control the row of the inlet drawing cylinders 30; even the rows of the drawing cylinders 20, 30 are provided with a series of pressure rollers (not shown in the figures for simplicity).
  • the drawing cylinders 10, 20, 30 are synchronized between each other and positively controlled, while the pressure rollers are idle; in this case, the drawing of the fibers is effected by the difference of the peripheral velocities of the inlet cylinders 30, the intermediate cylinder 20 and the outlet cylinder 10 and by the fact that the fibers happen to be grasped between the upper pressure rollers and the relative lower cylinders 30, 20, 10.
  • the ratio of the revolutions between the cylinders 20, 30 is kept constant by the actuators C23 and is represented by a value which can be set up by a user, while the ratio between the number of revolutions between the second cylinder 20 and the first cylinder 10 is variable and can at any rate be set by a user.
  • the data for setting up the values of the ratio between the number of revolutions of the drawing cylinders 10, 20, 30 are constituted by some inlet variables in a given application program, which takes care of managing the "brushless" motor drives.
  • controlling device for these motors produced according to this invention allows, in the case on hand, to control the drawing device of the continuous ring frame for the production of a yarn known as a flashed or fantasy yarn (for example, for curtains, tablecloths, and apparel).
  • a flashed or fantasy yarn for example, for curtains, tablecloths, and apparel.
  • the particular geometric characteristic of the flashed yarn distinguishes the visual appearance of its fabric, because it is constituted by a yarn formed by fibers of a specific length and a regular change of their cross-section; the periodical variation of the yarn's cross-section, which equals a restriction of the fibers in a given length of the yarn itself, determines an irregularity in the yarn, known as a flash due to its characteristic geometric form.
  • the yarn has a regular flash, while if the length varies in a casual manner the yarn is said to have an irregular flash.
  • the flash produced in the yarn will be of a regular type, meaning that every flash is separated by a constant interval over the entire length of the yarn, while if said value fluctuates with an irregular amplitude the flashing of the yarn will turn out to be irregular.
  • the same process according to the invention can similarly be applied to a fly frame, so as to continuously control the tension of the yarn while the slubbing winds up on a spool in a spinning frame, before removing the spools from the frame.
  • the control of the actuators (for the number of revolutions of the spindles and of the cylinder C, for the linear speed and accelerations of the spindle carrying block) is a function of a vector measured in the aerial path of the slubber, and this vector corresponds to the traction force of the slubber.
  • the process may be similarly be applied to a continuous ring frame, so as to set up the linear speeds and accelerations of the ring-carrying block and the rotation of the spindles, for each spinning count to be produced and independently from the machine's other motor drives, so as to lay down more loops of yarn on the spool, and therefore increase the machine's productivity.
  • the device actuating this process allows controlling the motor drives (of the "brushless” or asynchronous, alternate current motors) indicated in a simplified manner by the number 121 in Figure 2, of machines such as the fly frames or continuous ring frames previously described, so as to appropriately control the actuators C1, C23 of the cylinder assembly of a spinning machine, or the actuators CF, CC of the spindles or blocks of other textile machines.
  • every motor drive or motor 121 of the textile machine is equipped with an "encoder" 101 for measuring and controlling the number of revolutions completed by the mentioned motor 121, moreover, a central electronic unit 111 processes the signals originating from all the motor drives 121 and compares them with a series of synchronizing data between the individual motor drives 121 and the machine's technological parameters stored in an application program memorized in the central unit 111.
  • the electronic actuating device 112 sets N2 (the true number of revolutions of the motor drive 121) equal to the sum between N (the ideal number of revolutions of the motor drive 121, memorized in the application program inserted into the unit 111) and ⁇ N, and therefore corrects, by adding or subtracting, the number of revolutions of its own motor 121, so as to cancel out the mentioned differential value ⁇ N.
  • the ideal condition necessary is that in which the ⁇ N limit, for a time t tending to zero, must cancel itself out, and therefore, in the cases where on the contrary said limit turns out to be greater (N2>N) or smaller (N2 ⁇ N) than zero, the number of revolutions of the motor 121 corresponding to the actuator 112 must be respectively decreased or increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP00202689A 1999-07-29 2000-07-27 Vorrichtung und Verfahren zum kontrollieren der Motorantriebe in Textilmaschinen Ceased EP1072700A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI991693 1999-07-29
IT1999MI001693A IT1313271B1 (it) 1999-07-29 1999-07-29 Dispositivo e procedimento per il pilotaggio delle motorizzazioni dimacchine tessili.

Publications (1)

Publication Number Publication Date
EP1072700A1 true EP1072700A1 (de) 2001-01-31

Family

ID=11383448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202689A Ceased EP1072700A1 (de) 1999-07-29 2000-07-27 Vorrichtung und Verfahren zum kontrollieren der Motorantriebe in Textilmaschinen

Country Status (3)

Country Link
US (1) US6476570B1 (de)
EP (1) EP1072700A1 (de)
IT (1) IT1313271B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003072860A1 (en) * 2002-02-25 2003-09-04 Ppg Industries Ohio, Inc. System and method for severing filament material
EP1413655A1 (de) * 2002-10-25 2004-04-28 Marzoli S.p.A. Vorrichtung und Verfahren zum Steuern einer Textilmaschine, insbesondere einer Ringspinnmaschine
EP1522613A1 (de) * 2003-10-06 2005-04-13 Schärer Schweiter Mettler AG Einrichtung zur Herstellung von Kunstfaser-Stapelgarn
EP1522614A1 (de) * 2003-10-06 2005-04-13 Schärer Schweiter Mettler AG Einrichtung zur Herstellung von Kunstfaser-Stapelgarn
CN103261496A (zh) * 2010-06-30 2013-08-21 马佐里有限公司 用于操作环锭细纱机和为该环锭细纱机进行编程的设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006034712A1 (en) * 2004-09-30 2006-04-06 Linak A/S A linear actuator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034764A (en) * 1978-11-15 1980-06-11 Evolution Sa Driving rollers
GB2151664A (en) * 1983-11-25 1985-07-24 Textima Veb K Adjusting roving tension in a roving frame
EP0669414A1 (de) * 1994-02-14 1995-08-30 Toshimitsu Musha Spinnverfahren und Spinnmaschine
US5815889A (en) * 1994-07-12 1998-10-06 Csm-Saechsische Spinnereimaschinen Gmbh Process and device for regulating drafting equipment, in particular in carding machines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127151C3 (de) * 1971-06-01 1982-09-30 Grosse Webereimaschinen Gmbh, 7910 Neu-Ulm Verfahren und Vorrichtung zur Herstellung von Datenträgern zur Steuerung der Einlesevorrichtung von Textilmaschinen
US4219288A (en) * 1978-03-20 1980-08-26 Fiber Controls Corporation Web former having stop motion control
IL90789A0 (en) * 1988-08-05 1990-01-18 Rieter Ag Maschf Textile machine with drawframes
US5022123A (en) * 1988-09-29 1991-06-11 Murata Kikai Kabushiki Kaisha Draft mechanism having roller pairs connected to draft ratio controlled motors by timing belts
IT1232389B (it) * 1989-03-21 1992-02-17 Ergotron Dondi Benelli Dore Procedimento e dispositivo per impedire la formazione di barrature di trama nel tessuto alla ripresa di un funzionamento di un telaio dopo una interruzione
DE4011598A1 (de) * 1990-04-10 1991-10-17 Rieter Ag Maschf Textilmaschine, inbesondere ringspinnmaschine
JPH0544118A (ja) * 1991-07-31 1993-02-23 Howa Mach Ltd 粗紡機における制御装置
US5463557A (en) * 1992-05-15 1995-10-31 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Roving machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034764A (en) * 1978-11-15 1980-06-11 Evolution Sa Driving rollers
GB2151664A (en) * 1983-11-25 1985-07-24 Textima Veb K Adjusting roving tension in a roving frame
EP0669414A1 (de) * 1994-02-14 1995-08-30 Toshimitsu Musha Spinnverfahren und Spinnmaschine
US5815889A (en) * 1994-07-12 1998-10-06 Csm-Saechsische Spinnereimaschinen Gmbh Process and device for regulating drafting equipment, in particular in carding machines

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003072860A1 (en) * 2002-02-25 2003-09-04 Ppg Industries Ohio, Inc. System and method for severing filament material
US6845698B2 (en) 2002-02-25 2005-01-25 Ppg Industries Ohio, Inc. Systems and methods for severing elongated material
EP1413655A1 (de) * 2002-10-25 2004-04-28 Marzoli S.p.A. Vorrichtung und Verfahren zum Steuern einer Textilmaschine, insbesondere einer Ringspinnmaschine
US6856851B2 (en) 2002-10-25 2005-02-15 Marzoli S.P.A. Apparatus and method for operating and controlling a textile machine
EP1522613A1 (de) * 2003-10-06 2005-04-13 Schärer Schweiter Mettler AG Einrichtung zur Herstellung von Kunstfaser-Stapelgarn
EP1522614A1 (de) * 2003-10-06 2005-04-13 Schärer Schweiter Mettler AG Einrichtung zur Herstellung von Kunstfaser-Stapelgarn
CN103261496A (zh) * 2010-06-30 2013-08-21 马佐里有限公司 用于操作环锭细纱机和为该环锭细纱机进行编程的设备
CN103261496B (zh) * 2010-06-30 2015-09-09 马佐里有限公司 用于操作环锭细纱机和为该环锭细纱机进行编程的设备

Also Published As

Publication number Publication date
IT1313271B1 (it) 2002-07-17
ITMI991693A1 (it) 2001-01-29
US6476570B1 (en) 2002-11-05
ITMI991693A0 (it) 1999-07-29

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